1. The Mary Celeste (The Gold Standard of Ghost Ships)In December 1872, the British brigantine Dei Gratia spotted a ship drifting erratically about 400 miles off the coast of the Azores. When a boarding party stepped onto the Mary Celeste, they found a completely deserted vessel.The Clues: The ship was completely seaworthy, featuring a six-month supply of untouched food and water. The crew's personal belongings were undisturbed, but the captain's navigational instruments and the ship's solitary lifeboat were entirely missing.The Mystery: Why would an experienced captain, Benjamin Briggs, abandon a perfectly good ship in the open ocean with his wife, daughter, and seven crew members? No trace of the ten people was ever found. Modern researchers suspect a false alarm—perhaps leaking fumes from the cargo of industrial alcohol led the captain to fear an imminent explosion, prompting an ill-fated evacuation into the lifeboat.